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@einen tst strnt @ffice JOHN H. HARTSUFF, OF NEW OAS'ILEL PENNSYLVANIA,ASSIGNOR TO HIMSELF, R. W. CUNNINGHAM, AND R. C. DUNLAP.

Letters Patent No. 70,561, dated November 5, 1867.

IMPROVEMENT INGURBS FOR WATER-WHEELS. l

i-lge rlgrhtilc nfiml tu iu lgest httrs innlt mit milking pitt nf tigetame.

TO ALL WHOM IT MAY CONCERN: Y

Be it known that I, Y1011sy H. HRTSUFF, assigner to myself, R. W.Cunningham, and R. C, Dunlap, nll of New Castle, in the county ofLawrence, nud in the State of Pennsylvania, haveinvented certain new anduseful ImprovementsA in Casing for Turbine Water-Wheels; and do herebydeclare that the following is a full, clear, and exactdescriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon. In the annexed drawings, makingpart of this specification-- A represents :t wheel composed of two rims,which are placed a suitable distance apart, and separated by Ineens of aseries of wedges, C C, which are placed between them tangentially totheir inner peripheries. This wheel is intended to be made stationary inthe fore-bay of a mill-raoe, in n. horizontal position, to encircle nturbine-wheel, and to be encircled by a. wheel, B, somewhat similar inconstruction to itself. The wheel B is composed of two rims separated bystandards placed :tt suitable distances between them, there being onestandard for each wedge-shaped division O C of the wheel A. D Drepresent a series of tongues or gates, which are .secured between therims of thewheeiB tangentially with reference to the innenperiphery'ofthe wheel A. These tongues extend in between the wedges C C. and havehinged on their inner ends the fi/aps E Ev The loose end of eachflap-lies against the wedge C next to it. This outer wheelB is movable,having a. partial rotary motion backwards and forwards. When it moves inone direction it closes up then'ater-spaee between the wedge-shapeddivisions, and thus shuts itifrom the turbine-wheel which is within thewheel When it is moved in the other direction it 0pens`the water-chum]els, allowing of its passage to the wheel. The flap- E opens and closeswith the tongues D. It will readily he seen that bythe water pressingupon each side ofthe tongues D, said tongues will' be so nearly balancedthat the wheel B can easily be moved so as to open or close thewaterchannels. The object of these Hops is to produce this equilibriumof pressure for shutting against the divisions C. They allow water topress on one side of the tongue without allowing its passage, while thewater presses upon the other side of the tongue in passing to theturbine-wheel within wheel A.

What I claim as new, and desire to secure by Letters Patent, is

The tongues D D provided with the hinged ilaps E E, and used inlcoinbinatwn with the wheels A and B, constructed and operating as andfor the purpose set forth. i

In testimony that I claim the foregoing I have hereunto set my hztn'lthis 16th dey of September, 1867.

JOHN H. HARTSUFF.

Witnesses:

JAS. DIcKsoN, J. T. OooK.

